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Table 1 Expectations on directions and strengths of the correlations between EQ-5D-5L and the other measures in the analysis of convergent validity

From: Construct validity of EQ-5D-5L among patients with inflammatory bowel disease—a study based on real-world data from the Swedish Inflammatory Bowel Disease Registry

 

Mobility

Self-care

Usual activities

Pain/discomfort

Anxiety/depression

EQ VAS

EQ-5D-5L index

Hypothesis 8–14

H8

H9

H10

H11

H12

H13

H14

 PGA

++

++

++

++

++

−−−

−−−

Hypothesis 15–16

     

H15

H16

 SHS 1 (Severity of symptoms)

     

−−−

−−−

Hypothesis 17–18

  

H17

  

H18

H19

 SHS 2 (Interference in daily life)

  

+++

  

−−−

−−−

Hypothesis 19–21

    

H20

H21

H22

 SHS 3 (Worry caused by IBD)

    

+++

−−−

−−−

Hypothesis 22–24

    

H23

H24

H25

 SHS 4 (General feeling of well-being)

    

+++

−−−

−−−

Hypothesis 25–27

   

H26

 

H27

H28

 Symptom Index 7 (Abdominal pain)

   

+++

 

−−−

−−−

  1. The plus and minuses represent the direction and the strength. ++: at least a positive correlation of 0.3 (moderate), +++: at least a positive correlation of 0.5 (strong). Negative symbols follow the same interpretation of the strength of the correlation but represent negative correlations
  2. H Hypothesis, PGA Physician Global Assessment, SHS Short Health Scale, IBD Inflammatory bowel disease, EQ VAS Visual analogue scale in the EQ-5D-5L questionnaire